Pili and capsules are structures found in prokaryotic cells, particularly bacteria, but they are not organelles in the traditional sense. Instead, they are external structures that aid in adhesion, protection, and communication. Pili (or fimbriae) are hair-like appendages that facilitate attachment to surfaces and other cells, while the capsule is a protective, gelatinous layer that helps prevent desiccation and evades the immune response. Neither structure is membrane-bound like typical organelles such as mitochondria or the endoplasmic reticulum.
The Mitochondria.
Ribosomes are cell organells.They do not have pili.
Chromosomes. They are present in the nucleus.
The organelle that is present in a plant cell but absent in an animal cell is a CELL WALL.
An organelle refers to any one of the subcellular structure present in a cell. For example - chloroplast, mitochondrion, endoplasmic reticulum, golgi apparatus, lysome, nucleus, peroxisome, vacuole, vesicle.
erector pili
The endospore does not belong with the capsule and pilus. While capsules and pili are external structures that serve specific functions in bacterial attachment and protection, endospores are internal, dormant structures formed by certain bacteria to survive unfavorable conditions. Capsules and pili are involved in interactions with the environment, whereas endospores are primarily for survival and not for immediate interaction.
Centriole
chloroplasts
Omari Pili Johnson goes by Pili.
Pili are the fine hair like projections present on the bacterial cell surface. Only one or few pili are present on the cell surface. They are genetically determined, and are used for attachment in case of pathogenic bacteria. The sex pili are involved in bacterial conjugation and are found exclusively on the cells that donate DNA during this process.
The Mitochondria.
Ribosomes are cell organells.They do not have pili.
The fallagemum and pili
An arrector pili is any of a group of small muscles attached to hair follicles in mammals, the contraction of which causes the hairs to stand on end.
Chromosomes. They are present in the nucleus.
That capsule is not present in any standard pharmaceutical reference manuals.